_getHandleCount _getHandlePoint _getHandleType _hitTestBox _isClosed _isHandleFixed _load _output _points _reverse _save _setHandlePoint2 _subtype _sweepAngle getCenter getEndAngle getEndPoint getEndTangent getMidPoint getRadius getStartAngle getStartPoint getStartTangent getSubType getSweepAngle isCurve setCenterRadius setCenterStartEnd setCenterStartEnd setCSE setStartMidEnd setSubType setTanStartEnd

getCenter() Point2d MgArc::getCenter ( ) const 这是这个函数的调用关系图: